i get this with new sites to, all my traffic for one sites comes form msn. not a great deal thought, msn has the tendancy to drop my sites for no reason.
One day ill check im in top 10 then i checked this morning and for same kywordi dropped to like 100+
Wait till your site gets more links and grows old, google will be in your favour.
p.s ive never had any luck with yahoo so cant comment on them
